On Linux only for non-Filesystem backends (Ceph, Gluster, etc.) The only fork of Ganesha that supports it on a proper filesystem is the TrueNAS fork and that o

On Linux only for non-Filesystem backends (Ceph, Gluster, etc.) The only fork of Ganesha that supports it on a proper filesystem is the TrueNAS fork and that only on their ZFS Fork that brings NFSv4 ACLs to Linux. So really, no. You can't use NFSv4 ACLs with Ganesha on Linux outside of Forks or using scale-out data stores.